/* ===== 页面专属：帮助中心 (page-faq) ===== */
.page-faq {
  --faq-red: var(--primary, #E03A3E);
  --faq-bg-card: #ffffff;
  --faq-radius: 0;
  --faq-border-thick: 3px;
  --faq-shadow-card: 0 6px 18px rgba(0, 0, 0, 0.08);
  --faq-gap: 16px;
  --faq-padding-section: 40px 0;
}

/* ---------- Hero 区域 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  background-color: var(--bg-dark, #1A1A1A);
  min-height: 280px;
  display: flex;
  align-items: center;
}

.page-faq .faq-hero__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  opacity: 0.3;
  mix-blend-mode: luminosity;
}

.page-faq .faq-hero__bg-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 30%;
  display: block;
}

.page-faq .faq-hero__content {
  position: relative;
  z-index: 1;
  padding: 40px 20px;
  width: 100%;
}

.page-faq .faq-hero__title {
  font-family: var(--font-heading, 'Noto Sans SC', sans-serif);
  font-weight: 900;
  font-size: clamp(2rem, 5vw, 3.2rem);
  color: #ffffff;
  margin: 0 0 8px;
  letter-spacing: 0.04em;
  line-height: 1.15;
}

.page-faq .faq-hero__subtitle {
  font-family: var(--font-body, 'Noto Sans SC', sans-serif);
  font-size: 1.05rem;
  color: rgba(255, 255, 255, 0.8);
  margin: 0 0 28px;
  line-height: 1.5;
}

/* ---------- 搜索框 ---------- */
.page-faq .faq-search {
  position: relative;
  max-width: 560px;
  display: flex;
  align-items: center;
  background: #ffffff;
  border: var(--faq-border-thick) solid var(--faq-red);
  box-shadow: 0 4px 14px rgba(224, 58, 62, 0.18);
  transition: box-shadow var(--transition, 0.2s ease);
}

.page-faq .faq-search:focus-within {
  box-shadow: 0 4px 24px rgba(224, 58, 62, 0.30);
}

.page-faq .faq-search__icon {
  flex: 0 0 auto;
  width: 20px;
  height: 20px;
  margin-left: 16px;
  color: var(--faq-red);
  pointer-events: none;
}

.page-faq .faq-search__input {
  flex: 1 1 auto;
  border: none;
  outline: none;
  padding: 14px 16px;
  font-family: var(--font-body, 'Noto Sans SC', sans-serif);
  font-size: 1rem;
  color: var(--text-primary, #121212);
  background: transparent;
  min-width: 0;
}

.page-faq .faq-search__input::placeholder {
  color: var(--text-secondary, #757575);
  opacity: 0.8;
}

/* ---------- 热门标签 ---------- */
.page-faq .faq-tags {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 12px;
  margin-top: 18px;
}

.page-faq .faq-tags__label {
  font-family: var(--font-body, 'Noto Sans SC', sans-serif);
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.7);
  letter-spacing: 0.03em;
}

.page-faq .faq-tags__item {
  font-family: var(--font-body, 'Noto Sans SC', sans-serif);
  font-size: 0.85rem;
  color: #ffffff;
  background: rgba(255, 255, 255, 0.12);
  padding: 4px 14px;
  text-decoration: none;
  border: 1px solid rgba(255, 255, 255, 0.25);
  transition: background var(--transition, 0.2s ease), border-color var(--transition, 0.2s ease);
  line-height: 1.5;
}

.page-faq .faq-tags__item:hover,
.page-faq .faq-tags__item:focus-visible {
  background: var(--faq-red);
  border-color: var(--faq-red);
  color: #ffffff;
}

/* ---------- 面包屑 ---------- */
.page-faq .breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px 10px;
  padding: 18px 20px 0;
  font-family: var(--font-body, 'Noto Sans SC', sans-serif);
  font-size: 0.88rem;
  color: var(--text-secondary, #757575);
}

.page-faq .breadcrumb__link {
  color: var(--text-secondary, #757575);
  text-decoration: none;
  transition: color var(--transition, 0.2s ease);
}

.page-faq .breadcrumb__link:hover,
.page-faq .breadcrumb__link:focus-visible {
  color: var(--faq-red);
  text-decoration: underline;
}

.page-faq .breadcrumb__sep {
  color: var(--border, #E0E0E0);
  user-select: none;
}

.page-faq .breadcrumb__current {
  font-weight: 600;
  color: var(--text-primary, #121212);
}

/* ---------- 常见问题列表 ---------- */
.page-faq .faq-list {
  padding: var(--faq-padding-section);
}

.page-faq .faq-list__heading {
  margin-bottom: 32px;
  font-size: clamp(1.4rem, 3vw, 2rem);
  border-left: var(--faq-border-thick) solid var(--faq-red);
  padding-left: 18px;
}

/* ---------- 折叠面板 ---------- */
.page-faq .faq-item {
  display: block;
  margin-bottom: 12px;
  background: var(--faq-bg-card);
  border: 2px solid var(--border, #E0E0E0);
  box-shadow: var(--faq-shadow-card);
  transition: border-color var(--transition, 0.2s ease), box-shadow var(--transition, 0.2s ease);
}

.page-faq .faq-item[open] {
  border-color: var(--faq-red);
  box-shadow: 0 6px 24px rgba(224, 58, 62, 0.10);
}

.page-faq .faq-item__question {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 16px 20px;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-heading, 'Noto Sans SC', sans-serif);
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--text-primary, #121212);
  transition: color var(--transition, 0.2s ease);
  user-select: none;
  -webkit-tap-highlight-color: transparent;
}

.page-faq .faq-item__question::-webkit-details-marker {
  display: none;
}

.page-faq .faq-item__question:hover {
  color: var(--faq-red);
}

.page-faq .faq-item[open] .faq-item__question {
  color: var(--faq-red);
}

.page-faq .faq-item__icon {
  flex: 0 0 auto;
  width: 40px;
  height: 40px;
  object-fit: contain;
  border-radius: 0;
  display: block;
}

.page-faq .faq-item__text {
  flex: 1 1 auto;
  line-height: 1.4;
}

.page-faq .faq-item__arrow {
  flex: 0 0 auto;
  font-size: 1.4rem;
  font-weight: 900;
  color: var(--faq-red);
  transition: transform var(--transition, 0.2s ease);
  line-height: 1;
}

.page-faq .faq-item[open] .faq-item__arrow {
  transform: rotate(90deg);
}

.page-faq .faq-item__answer {
  padding: 0 20px 20px;
  font-family: var(--font-body, 'Noto Sans SC', sans-serif);
  font-size: 0.95rem;
  line-height: 1.7;
  color: var(--text-primary, #121212);
  border-top: 1px solid var(--border, #E0E0E0);
  margin: 0 20px 0 74px;
  padding-top: 16px;
}

.page-faq .faq-item__answer p {
  margin: 0;
}

.page-faq .faq-item__link {
  color: var(--faq-red);
  text-decoration: underline;
  text-underline-offset: 2px;
  transition: opacity var(--transition, 0.2s ease);
}

.page-faq .faq-item__link:hover,
.page-faq .faq-item__link:focus-visible {
  opacity: 0.75;
}

/* ---------- 联系支持 ---------- */
.page-faq .faq-support {
  padding: 48px 0 64px;
}

.page-faq .faq-support__inner {
  background: var(--bg-dark, #1A1A1A);
  padding: 40px 32px;
  text-align: center;
  border-left: var(--faq-border-thick) solid var(--faq-red);
  box-shadow: var(--shadow, 0 8px 20px rgba(0,0,0,0.2));
}

.page-faq .faq-support__title {
  color: #ffffff;
  font-size: clamp(1.3rem, 2.5vw, 1.8rem);
  margin: 0 0 16px;
  border-left: none;
  padding-left: 0;
}

.page-faq .faq-support__desc {
  color: rgba(255, 255, 255, 0.85);
  font-size: 1rem;
  line-height: 1.6;
  max-width: 600px;
  margin: 0 auto 28px;
}

.page-faq .faq-support__desc strong {
  color: #ffffff;
  font-weight: 700;
}

.page-faq .faq-support__btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 40px;
  font-family: var(--font-heading, 'Noto Sans SC', sans-serif);
  font-weight: 700;
  font-size: 1.05rem;
  color: #ffffff;
  background: var(--faq-red);
  border: 2px solid var(--faq-red);
  text-decoration: none;
  transition: background var(--transition, 0.2s ease), color var(--transition, 0.2s ease), box-shadow var(--transition, 0.2s ease);
  box-shadow: 0 4px 14px rgba(224, 58, 62, 0.30);
  cursor: pointer;
}

.page-faq .faq-support__btn:hover,
.page-faq .faq-support__btn:focus-visible {
  background: transparent;
  color: var(--faq-red);
  box-shadow: 0 4px 24px rgba(224, 58, 62, 0.25);
}

.page-faq .faq-support__links {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 16px 28px;
  margin-top: 28px;
}

.page-faq .faq-support__link {
  color: rgba(255, 255, 255, 0.7);
  text-decoration: underline;
  text-underline-offset: 3px;
  font-size: 0.9rem;
  transition: color var(--transition, 0.2s ease);
}

.page-faq .faq-support__link:hover,
.page-faq .faq-support__link:focus-visible {
  color: var(--faq-red);
}

/* ===== 响应式 ===== */
/* 移动端优先，以上为移动端样式，以下为桌面增强 */
@media (min-width: 768px) {
  .page-faq .faq-hero {
    min-height: 340px;
  }

  .page-faq .faq-hero__content {
    padding: 56px 40px;
  }

  .page-faq .faq-search__input {
    padding: 16px 20px;
    font-size: 1.05rem;
  }

  .page-faq .faq-tags {
    margin-top: 24px;
    gap: 10px 16px;
  }

  .page-faq .breadcrumb {
    padding: 24px 40px 0;
    font-size: 0.92rem;
  }

  .page-faq .faq-list {
    padding: 56px 0;
  }

  .page-faq .faq-list__heading {
    margin-bottom: 40px;
  }

  .page-faq .faq-item {
    margin-bottom: 16px;
  }

  .page-faq .faq-item__question {
    padding: 18px 28px;
    font-size: 1.1rem;
  }

  .page-faq .faq-item__icon {
    width: 48px;
    height: 48px;
  }

  .page-faq .faq-item__answer {
    padding: 20px 28px 28px;
    margin: 0 28px 0 90px;
    font-size: 1rem;
  }

  .page-faq .faq-support {
    padding: 56px 0 80px;
  }

  .page-faq .faq-support__inner {
    padding: 52px 48px;
  }

  .page-faq .faq-support__desc {
    font-size: 1.05rem;
  }
}

@media (min-width: 992px) {
  .page-faq .faq-hero__content {
    padding: 72px 40px;
  }

  .page-faq .faq-hero__title {
    font-size: 3.2rem;
  }

  .page-faq .faq-hero__subtitle {
    font-size: 1.15rem;
  }

  .page-faq .faq-search {
    max-width: 620px;
  }

  .page-faq .faq-list {
    padding: 64px 0;
  }

  .page-faq .faq-item__question {
    padding: 20px 32px;
  }

  .page-faq .faq-item__answer {
    padding: 24px 32px 32px;
    margin: 0 32px 0 100px;
  }
}

@media (min-width: 1200px) {
  .page-faq .faq-hero {
    min-height: 380px;
  }

  .page-faq .faq-hero__content {
    padding: 80px 0;
  }

  .page-faq .breadcrumb {
    padding: 28px 0 0;
  }

  .page-faq .faq-support__inner {
    padding: 64px 56px;
  }
}